添加了addUser和deleteUser的方法

src/main/java/org/cmh/backend/authentication/repository/UserRepository.java

@@ -5,4 +5,6 @@ import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface UserRepository extends JpaRepository<UserHS, Long> {
     UserHS findByUsername(String username);
+
+    boolean deleteByUsername(String username);
 }

src/main/java/org/cmh/backend/authentication/service/UserService.java

@@ -53,6 +53,32 @@ public class UserService {
         return true;
     }
 
+    public boolean addUser(UserHS user) {
+        String username = user.getUsername();
+        String password = user.getPassword();
+        String phoneNumber = user.getPhoneNumber();
+        // 验证用户名是否已存在
+        if (userRepository.findByUsername(username) != null) {
+            return false; // 用户已存在
+        }
+
+        // 验证输入格式
+        if (!isValidUsername(username) || !isValidPassword(password) || !isValidContactInfo(phoneNumber)) {
+            throw new IllegalArgumentException();
+        }
+
+        // 加密密码
+        String encodedPassword = passwordEncoder.encode(password);
+        user.setPassword(encodedPassword);
+
+        userRepository.save(user);
+        return true;
+    }
+
+    public boolean deleteUser(String username){
+        return userRepository.deleteByUsername(username);
+    }
+
     public boolean loginUser(String username, String password) {
         UserHS user = userRepository.findByUsername(username);
         return user != null && passwordEncoder.matches(password, user.getPassword());